dsh-tools-mcp

Extract and wrap the tools from minimal mode and standard mode in deepseek-harness (DeepSeek AI's open-source agent harness) as an MCP (Model Context Protocol) server, with the --mode parameter controlling which tool set is exposed.

The tool schemas, description texts, and output envelopes (such as the <path>/<type>/<content> format of read, the view/create/str_replace/insert semantics of str_replace_editor, and the [exit code: N] marker) are all faithfully reproduced from the original repository's apps/cli/config/agent-presets/{minimal,standard}/agent.cordis.yml and its corresponding packages/*/tool-* implementations.

Mode and Tool Mapping

Standard mode also supports --with-web-fetch to additionally expose web_fetch (the original standard preset defaults to fetch: false).

Related MCP server: deepseek-agent-mcp

Quick Start

cd dsh-tools-mcp
npm install
npm run build          # 输出到 dist/

# 极简模式
node dist/index.js --mode minimal --cwd D:/develop/project/dsh-tools-mcp

# 标准模式
node dist/index.js --mode standard --cwd D:/develop/project/dsh-tools-mcp

MCP Client Configuration

// mcp.json / WorkBuddy 自定义连接器
{
  "mcpServers": {
    "dsh-minimal": {
      "command": "node",
      "args": ["D:/develop/project/dsh-tools-mcp/dist/index.js", "--mode", "minimal", "--cwd", "D:/develop/project/dsh-tools-mcp"]
    },
    "dsh-standard": {
      "command": "node",
      "args": ["D:/develop/project/dsh-tools-mcp/dist/index.js", "--mode", "standard", "--cwd", "D:/develop/project/dsh-tools-mcp"]
    }
  }
}

Both entry points can be registered simultaneously, and you can choose the minimal or standard tool set as needed.

All Parameters

--mode <minimal|standard>    Agent 预设模式（默认 minimal）
--cwd <path>                 工作区根目录，文件工具基于它解析相对路径（默认 process.cwd()）
--shell <auto|bash|pwsh>     shell 后端；auto = win32 用 pwsh，其余用 bash
--shell-timeout-ms <n>       持久 shell 单条命令超时（默认 300000）
--max-output-chars <n>       输出截断上限（默认 16000）
--skills-dir <path>          启用 skill 工具，扫描该目录下的 SKILL.md 子目录
--search-provider <duckduckgo|tavily|bing>   web 搜索后端（默认 duckduckgo）
--search-api-key <key>       tavily/bing 的 API key
--proxy <url>                web 工具的 HTTP(S) 代理，如 http://127.0.0.1:7897
--with-web-fetch             额外暴露 web_fetch
--allow-outside-root         允许文件工具访问 --cwd 之外的路径（默认禁止）
--tools <a,b,c>              显式指定工具/套件清单覆盖模式（见下）
--help / --version

--tools Override

--tools accepts tool names or suite names to expose a subset as needed:

# 只要文件相关
node dist/index.js --mode standard --tools read,write,edit,glob,grep

# 只要极简模式的编辑器 + 后台任务
node dist/index.js --mode minimal --tools str_replace_editor,job_output,job_list,job_kill

Suite names: shell (persistent shell), one-shot, fs, search, jobs, todo, web, ask-user, goal, plan, skill.

Design Notes

• Persistent shell: No node-pty dependency; uses stdio pipes to drive a long-running bash/powershell child process; commands are wrapped with random UUID markers to reliably capture completion status and exit codes; state such as cd/export is maintained across calls; automatically resets on timeout or shell exit (consistent with the original tool-bash-persistent semantics).

• Path safety: By default, file tools only allow access to paths within the --cwd workspace; out-of-bounds access raises an error prompting the use of --allow-outside-root.

• web_search defaults to DuckDuckGo (no API key required); for users in mainland China, it is recommended to use --proxy http://127.0.0.1:7897, or switch to --search-provider tavily --search-api-key <key>.

• All state is in-process (session-level): todo/goal/plan/background job state lives with the server process lifecycle and is cleared on restart—equivalent to the original "session-level state."

Differences from the Original dsh

Unwrapped tools (runtime-coupled tools in the original standard preset, requiring the full dsh runtime): subagent_control, list_agents, subagent, subagent_fork, workflow, ralph. For these capabilities, please use the deepseek-harness itself.

Testing

npm run build
npm test          # 冒烟测试：两种模式工具暴露 + 核心工具行为 + --tools 覆写
node scripts/state-test.mjs   # 持久 shell 状态保持 / 退出码 / 优雅重置（PROXY=... 可测 web_search）
node scripts/bash-test.mjs    # bash 后端验证

Source Code Reference

Extracted from deepseek-ai/deepseek-harness (MIT License, master branch):

• Mode definitions: apps/cli/config/agent-presets/minimal/agent.cordis.yml, .../standard/agent.cordis.yml

• Tool implementations: packages/shell/tool-bash-persistent, packages/fs/tool-str-replace-editor, packages/fs/tool-fs, packages/fs/tool-fs-search, packages/jobs/tool-jobs, packages/todo/tool-todo, packages/web/tool-web, packages/interaction/tool-ask-user, packages/goal/tool-goal, packages/plan/plan-mode, packages/skill/tool-skill, etc.